Iain M Robertson has taught at the University of Washington for over twenty years. His interests include plants as a design medium, human experiences of landscape designs, and urban ecological design. He has practiced as a landscape architect in his native Scotland and on the East and West coasts, and has consulted with several Western arboreta and botanic gardens.

Bart O’Brien is one of Southern California’s most highly respected native plant specialists and co-author with David Fross and Carol Bornstein of California Native Plants for the Garden (Cachuma Press, 2006). Bart is director of special projects at Rancho Santa Ana Botanic Garden in Claremont.

Carol Bornstein is one of Southern California’s most highly respected native plant specialists and co-author with David Fross and Bart O’Brien of California Native Plants for the Garden (Cachuma Press, 2006). Carol was horticulturist for the Santa Barbara Botanic Garden for nearly thirty years.

Richard G Turner Jr is the editor emeritus of Pacific Horticulture. After receiving degrees in architecture and landscape architecture from the University of Michigan more than thirty years ago, he escaped to California, where he has worked in the fields of garden design, public garden education and administration, and garden publishing. His small, chemical-free San Francisco garden provides habitat for wildlife while serving as a test ground for mediterranean-climate plants.